100mm f/2.8 macro - repair or just replace?

Lemming51 wrote:

Will CH wrote:

... So, yesterday I became aware of the fairly noticeable chromatic aberration with one of my photos taken with the 100mm. I also noticed that Lightroom has been using the wrong default lens profile. It has been using the 100mm f/2.8 not the 100mm f/2.8 Macro.

? All three of the EF 100 f/2.8, EF 100 f/2.8 USM, and EF 100 f/2.8L IS USM lenses are Macro.

Sorry, my mistake. Lightroom has been automatically using the Canon EF 100mm f/2 USM lens profile instead of the EF 100mm f/2.8 Macro USM profile.

Is it worse than demonstrated in this review?

http://www.photozone.de/canon_eos_ff/489-canon_100_28_5d?start=1

Is it noticeable in your pics when viewed/printed normally and not looking for it by viewing at 1:1?

I suppose it isn't much worse than demonstrated in that review. What I see on my photos is the green and purple fringing. I didn't realize that so much aberration was considered normal. Now that I know it is there I do think I can see it when I view my photos at a normal size. However, thank you for directing me to that page. It seems to suggest that at f/4 the problem is nearly corrected. I've been analyzing my photos more and it seems that I do tend to shoot with this lens mostly in the f/2.8-f/4 zone. I will experiment more this week and see how it performs above f/4.

Thank you so much for your response. This is very helpful information for me to work with. Perhaps now I can keep the lens and maybe use the money for a different lens.